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トップに関する質問pictureBoxに線が描けません。何故でしょうか？

編集履歴

質問編集履歴

1

修正

2016/03/01 06:33

投稿

fender0131
fender0131

スコア121

test CHANGED
File without changes
test CHANGED
@@ -60,24 +60,144 @@
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  {
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+ this.KeyPreview = true;
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+
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+ }
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+
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+
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+
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+ private void Form1_Shown(object sender, EventArgs e)
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+
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+ {
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+
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+ byouga();
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+
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+ }
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+
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+
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+
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+ private void button1_Click(object sender, EventArgs e)
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+
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+ {
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+
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+ byouga();
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+
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+ }
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+
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+
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+
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+ private void byouga()
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+
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+ {
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+
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+ //Panel1のGraphicsオブジェクトを作成
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+ Graphics g = pictureBox1.CreateGraphics();
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+
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+
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+
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+ // penを作成
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+
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+ Pen greenPen = new Pen(Color.Green, 5);
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+
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+
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+
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+ // lineの始点と終点を設定
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+ Point Start_point5 = new Point(50, 200);
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+ Point End_point5 = new Point(250, 200);
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+
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+
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+
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+ // lineを描画
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+ g.DrawLine(greenPen, Start_point5, End_point5);
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+
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+
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+
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+ // penを解放する
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+ greenPen.Dispose();
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+
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+
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+
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+ // Graphicsを解放する
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+
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+ g.Dispose();
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+
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+ }
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+
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+ }
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+
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+ }
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+
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+
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+
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+ ```
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+
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+
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+
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+ ```ここに言語を入力
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+
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+ using System;
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+
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+ using System.Collections.Generic;
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+
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+ using System.ComponentModel;
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+
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+ using System.Data;
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+
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+ using System.Drawing;
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+
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+ using System.Linq;
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+
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+ using System.Text;
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+
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+ using System.Threading.Tasks;
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+
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+ using System.Windows.Forms;
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+
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+
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+
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+ namespace WindowsFormsApplication8
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+
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+ {
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+
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+ public partial class Form1 : Form
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+
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+ {
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+
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+ public Form1()
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+
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+ {
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+
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+ InitializeComponent();
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+
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+ }
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+
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+
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+
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+ private void Form1_Load(object sender, EventArgs e)
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+
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+ {
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+
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  this.KeyPreview = true;
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+ }
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+
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+
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+
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+ private void button1_Click(object sender, EventArgs e)
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+
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+ {
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+
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  byouga();
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  }
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- private void button1_Click(object sender, EventArgs e)
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-
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- {
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-
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-
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-
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- }
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-
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-
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-
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  private void byouga()
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  {
@@ -132,120 +252,6 @@
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- ```ここに言語を入力
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-
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- using System;
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-
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- using System.Collections.Generic;
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-
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- using System.ComponentModel;
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-
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- using System.Data;
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-
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- using System.Drawing;
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-
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- using System.Linq;
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-
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- using System.Text;
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-
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- using System.Threading.Tasks;
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-
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- using System.Windows.Forms;
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-
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-
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-
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- namespace WindowsFormsApplication8
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-
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- {
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-
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- public partial class Form1 : Form
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-
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- {
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-
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- public Form1()
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-
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- {
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-
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- InitializeComponent();
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-
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- }
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-
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-
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-
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- private void Form1_Load(object sender, EventArgs e)
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-
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- {
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-
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- this.KeyPreview = true;
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-
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- }
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-
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-
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-
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- private void button1_Click(object sender, EventArgs e)
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-
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- {
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-
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- byouga();
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-
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- }
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-
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-
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-
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- private void byouga()
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-
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- {
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-
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- //Panel1のGraphicsオブジェクトを作成
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-
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- Graphics g = pictureBox1.CreateGraphics();
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-
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-
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-
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- // penを作成
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-
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- Pen greenPen = new Pen(Color.Green, 5);
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-
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-
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-
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- // lineの始点と終点を設定
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-
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- Point Start_point5 = new Point(50, 200);
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-
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- Point End_point5 = new Point(250, 200);
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-
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-
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-
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- // lineを描画
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-
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- g.DrawLine(greenPen, Start_point5, End_point5);
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-
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-
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-
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- // penを解放する
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- greenPen.Dispose();
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-
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-
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-
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- // Graphicsを解放する
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-
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- g.Dispose();
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-
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- }
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-
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-
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-
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- }
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-
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- }
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-
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-
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-
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- ```
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-
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-
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-
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